North Korea claims nuclear test
South Koreans watch television in the wake of North Korea's reported nuclear test
There was concern among South Koreans at the news
North Korea says it has carried out its first test of a nuclear weapon, the state news agency (KCNA) has reported.
It said the underground test, carried out in defiance of international warnings, was a success and had not resulted in any leak of radiation.
The White House said South Korean and US intelligence had detected a seismic event at a suspected test site.
The White House said, if confirmed, the test would be a "provocative act", while China denounced it as "brazen".
In its strongest statement ever against its ally, China expressed its "resolute opposition" to the claimed test and said it "defied the universal opposition of international society".
Japan's Prime Minister Shinzo Abe said the test was "unpardonable".
We expect the UN Security Council to take immediate actions to respond to this unprovoked act
South Korea said it would "sternly respond".
President Roh Moo-hyun has called an emergency meeting of South Korea's National Security Council and put the armed forces on a heightened state of alert.
Seoul also suspended a scheduled aid shipment to North Korea, the state news agency reported.
US White House spokesman Tony Snow said: "We expect the UN Security Council to take immediate actions to respond to this unprovoked act."
'Historic event'
The US Geological Survey said it had detected a 4.2 magnitude quake in North Korea, while a South Korean official said a 3.5 magnitude seismic tremor had been detected in north Hamgyong province, in the north-east.
South Korea's Yonhap news agency is reporting that the test took place in Gilju in Hamgyong province at 1036 (0136 GMT).
A top Russian military officer said it was "100%" certain that an underground nuclear explosion had taken place.
When it announced the test, KCNA described it as an "historic event that brought happiness to our military and people".
"The nuclear test will contribute to maintaining peace and stability in the Korean peninsula and surrounding region," KCNA said.
The region has been on high alert since North Korea announced last week that it would conduct a nuclear test.
Shinzo Abe is in Seoul for a meeting with Mr Roh, a day after talks in Beijing.
Mr Abe said Japan wanted to co-ordinate its response with the South Koreans, and was also in contact with the US and China.
In Tokyo, ministers were called to an urgent meeting, and the government set up a special task force.
http://news.bbc.co.uk/2/hi/asia-pacific/6032525.stm
South Koreans watch television in the wake of North Korea's reported nuclear test
There was concern among South Koreans at the news
North Korea says it has carried out its first test of a nuclear weapon, the state news agency (KCNA) has reported.
It said the underground test, carried out in defiance of international warnings, was a success and had not resulted in any leak of radiation.
The White House said South Korean and US intelligence had detected a seismic event at a suspected test site.
The White House said, if confirmed, the test would be a "provocative act", while China denounced it as "brazen".
In its strongest statement ever against its ally, China expressed its "resolute opposition" to the claimed test and said it "defied the universal opposition of international society".
Japan's Prime Minister Shinzo Abe said the test was "unpardonable".
We expect the UN Security Council to take immediate actions to respond to this unprovoked act
South Korea said it would "sternly respond".
President Roh Moo-hyun has called an emergency meeting of South Korea's National Security Council and put the armed forces on a heightened state of alert.
Seoul also suspended a scheduled aid shipment to North Korea, the state news agency reported.
US White House spokesman Tony Snow said: "We expect the UN Security Council to take immediate actions to respond to this unprovoked act."
'Historic event'
The US Geological Survey said it had detected a 4.2 magnitude quake in North Korea, while a South Korean official said a 3.5 magnitude seismic tremor had been detected in north Hamgyong province, in the north-east.
South Korea's Yonhap news agency is reporting that the test took place in Gilju in Hamgyong province at 1036 (0136 GMT).
A top Russian military officer said it was "100%" certain that an underground nuclear explosion had taken place.
When it announced the test, KCNA described it as an "historic event that brought happiness to our military and people".
"The nuclear test will contribute to maintaining peace and stability in the Korean peninsula and surrounding region," KCNA said.
The region has been on high alert since North Korea announced last week that it would conduct a nuclear test.
Shinzo Abe is in Seoul for a meeting with Mr Roh, a day after talks in Beijing.
Mr Abe said Japan wanted to co-ordinate its response with the South Koreans, and was also in contact with the US and China.
In Tokyo, ministers were called to an urgent meeting, and the government set up a special task force.
http://news.bbc.co.uk/2/hi/asia-pacific/6032525.stm